Pekley l



(No Model P. L.'KIM BALL. ROTARY SHAFT BEARING.

Patentd m. 19, 1897.

UNTTED STATES PATENT @rErcE,

PERLEY L. KIMBALL, OF BELLOW'S FALLS, VERMONT, ASSIGNOR TO THE VERMONTFARM MAOHIN E COMPANY, OF SAME PLACE.

ROTARY-S HAFT BEARING.

SPECIFICATION forming part of Letters Iatent No. 575,481, dated January19, 1897.

Application filed November 23, 1896. Serial No. 613,095. (No model.)

T0 at whom it may concern.-

Be it known that I, PERLEY L. KIMBALL, a citizen of the United States ofAmerica, residing at Bellows Falls, in the county of Windham and Stateof Vermont, have invented a certain new and useful Improvement in R0-tary-Shaft Bearings, of which the following is a description, referencebeing had to the accompanying drawings, wherein Figure 1 is a view incentral vertical section, except as to the rotary shaft. Fig. 2 is a topview of the series of springs made use of rep resented as connected to aspring-base which is a separate piece. Fig. 3 is a top View of theseries of springs made use of represented as integral with thespring-base.

The object of the improvement is to provide a bearing for a rotatoryshaft which shall support it in alinement with all necessary strength,but yet allow it some latitude for vibration and at the same time beprovided with means for adjusting the force or strength with which thebearing tends to hold the shaft in one particular alinement. One use ofsuch a bearing is to support the shaft or spindle of a centrifugalseparator, which necessarily has a high speed of rotation and at thesame time needs provision for certain lateral vibration of the shaft orspindle.

In the accompanying drawings the letter h denotes the rotatory shaft,and 9 denotes a sleeve-bearing encircling the same.

The letter a denotes a spring-pressure regulator, which is a sleeveencircling said sleevebearing 9 and connected thereto by cooperatingscrew-threads.

The letter 1) denotes springs in a series, made of any suitablematerial-spring-steel, for instance-which preferably, but notnecessarily, are connected together by a common attachment to a ring 0.These springs bear at the back against the base 6, and they also bearagainst an annular cam-like surface on the spring-pressure regulator or.Byrunning this springpressure regulator upward the springs are made tobear with increased pressure, thereby increasing the force or strengthwith which they tend to hold the rotatory shaft in one certain alinementand against lateral vibration. By running this spring-pressure regulatordownward the said spring-pressure is correspondingly decreased.

The letter f denotes a lock-nut for assisting to hold thespring-pressure regulator in place when once adjusted.

I I claim as my improvement-- 1. In combination, the rotatory shaft, thesleeve bearing encircling said shaft, the spring pressure regulatorencircling said sleeve-bearing, and the springs, all substantially asdescribed and for the purposes set forth.

2. In combination, the rotatory shaft, the sleeve bearing encirclingsaid shaft, the spring pressure regulator encircling said sleeve-bearingand connected thereto by cooperating screwthreads, and the springs, allsubstantially as described and for the purposes set forth.

3. In combination, the rotatory shaft, the sleeve bearing encirclingsaid shaft, the spring pressure regulator, encircling saidsleeve-bearing, the lock-nut, and the springs, all substantially asdescribed and for the purposes set forth.

7 PERLEY L. KIMBALL.

Witnesses:

FRANK G. DAY,

CHAS. O. A. Anne.

